Example Programs; Table 3-1: Adsp-21992 Memory - Analog Devices ADSP-21992 EZ-KIT LITE Manual

The ADSP-21992 EZ-KIT Lite board provides 512K x 8 bits of external flash memory. These
flash memory ICs are connected to the boot memory select (
pin ( MS0 ) via a 2-input AND Gate (U1). Jumper JP31 is placed on the
MS0 pin if required. The flash memory can be accessed in either the boot memory space or the
external memory space,.
If booting from the external flash memory IC, JP31 can be left open. In this case, the external
SRAM provided on the ADSP-21992 EZ-KIT Lite board can be mapped to any of the external
memory banks using one of the jumpers, JP24 – JP27.
If not booting from the flash memory, but using it as external program or data memory, JP31
must be closed. In this case the external SRAM provided on the ADSP-21992 EZ-KIT Lite board
should not be mapped to external memory bank 0 (JP24 should be open in this case) and can be
mapped to any of the other external memory banks using one of the jumpers, JP25 – JP27.
When using the external memories provided on the ADSP-21992 EZ-KIT Lite board, they are
mapped at the start address of the chosen external memory bank.
Start
Address
0x00 0000
Internal
0x00 8000
Memory
0x00 C000
0x01 0000
External
0x40 0000
Memory
0x80 0000
(at reset)
0xC0 0000
0xFF 0000
Reserved
0xFF 1000
0x00 0000
IO Memory
0x00 2000
! NOTE: Although the flash starts at address 0x01 0000 in the boot memory space,
during EPROM boot the address 0x00 0000 is put on the address bus.
!
NOTE: Only 8K of program memory is available in the EZ-KIT Lite software.

3.4 Example Programs

Example programs are provided with the ADSP-21992 EZ-KIT Lite to demonstrate various
capabilities of the evaluation board. These programs are installed with the EZ-KIT Lite software
and can be found in \...\VisualDSP\219x\EZ-KITs\ADSP-21990\Examples. Please refer to the
example program readme files for more information.
ADSP-21992 EZ-KIT Lite Evaluation System Manual
Table 3-1: ADSP-21992 Memory Map
End
Page
Address
0
0x00 7FFF
0
0x00 BFEF
0
0x00 FFFF
1-63
0x3F FFFF
64-127
0x7F FFFF
128-191
0xBF FFFF
192-254
0xFE FFFF
255
0xFF 0FFF
255
0xFF FFFF
0-7
0x00 1FFF
8-255
0x03 FFFF
pin, or to the memory select 0
BMS)
MS0 line to disconnect the
Content
32K x 24-Bit Program Memory
16K x 16-Bit Data Memory
RESERVED (16K)
External Memory (Bank 0)
External Memory (Bank 1)
External Memory (Bank 2)
External Memory (Bank 3)
4K x 24-Bit Boot ROM (Internal)
RESERVED (Internal)
16-Bit Internal I/O Memory
16-Bit External I/O Memory
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